A novel 3D flower-like BiPO₄/Bi₂WO₆ photocatalyst was prepared using hydrothermal method. The crystal structure, surface morphologies and optical properties of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) and Ultraviolet–visible diffuse reflectance spectrum (UV–vis DRS). The photocatalytic activity of the BiPO₄/Bi₂WO₆ composites was evaluated by using rhodamine B (RhB) as a target organic pollutant under visible light irradiation. The composite with the content of 15% BiPO₄ exhibited the highest photocatalytic property with the 92% removal rate of RhB within 100 min under visible light irradiation, which ascribed to the fast separation efficiency of photo-induced charge carriers, according with the results of photoluminescence (PL), photocurrent (PC) and electrochemical impedance spectroscopy (EIS). Also, it showed superior stability after three times of recycling. Eventually, the possible photocatalytic mechanism of BiPO₄/Bi₂WO₆ composite was proposed according to the energy band structure and the radical-trapping experiment.

采用水热法制备了新颖的3D花状BiPO ₄ / Bi ₂ WO ₆光催化剂。通过X射线衍射（XRD），扫描电子显微镜（SEM），能量色散光谱（EDS），透射电子显微镜（TEM），X射线光电子能谱（ XPS），Brunauer-Emmett-Teller（BET）和紫外可见漫反射光谱（UV-vis DRS）。以若丹明B（RhB）为目标有机污染物，在可见光照射下评估BiPO ₄ / Bi ₂ WO ₆复合材料的光催化活性。BiPO ₄含量为15％的复合材料根据光致发光（PL），光电流（PC）和光致发光的结果，在可见光照射下100分钟内RhB的去除率达到92％，具有最高的光催化性能，这归因于光诱导电荷载流子的快速分离效率。电化学阻抗谱（EIS）。而且，在循环使用三遍后，它显示出优异的稳定性。最终，根据能带结构和自由基俘获实验，提出了BiPO ₄ / Bi ₂ WO ₆复合材料可能的光催化机理。